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. 2017 Nov 21;8:246. doi: 10.3389/fpsyt.2017.00246

Table 1.

Demographic and clinical characteristics of all participants.

ADHD (n = 46) HCs (n = 31) P value
Age (years) 8.48 ± 1.89 (6–13) 8.84 ± 1.57 (6–12) 0.247a
Gender (M/F) 38/8 22/9 0.269b
IQ 119 (82–145) 120 (95–141) 0.531c
Hyperactivity index score 1.45 (0.4–2.8) 0.40 (0–1.5) <0.001c
Impulsive score 1.54 ± 0.63 (0.5–3) 0.50 ± 0.48 (0–1.75) <0.001a

Values are presented as mean ± standard (minimum − maximum) or median (minimum − maximum) depending on the normality.

ADHD, attention-deficit/hyperactivity disorder; HCs, healthy controls; M, male; F, female; IQ, intelligence quotient.

aP-values were obtained using two-sample t-tests.

bP-value was obtained using a chi-square test.

cP-values were obtained using Wilcoxon rank sum tests.